|
What are the advantages of using fabrics made of polyester?
|
|
0
|
1474
|
September 16, 2017
|
|
The bulb does not glow in the set-up shown in figure
|
|
0
|
1237
|
September 16, 2017
|
|
Give some uses of nylon
|
|
0
|
918
|
September 16, 2017
|
|
What are the advantages of nylon?
|
|
0
|
869
|
September 16, 2017
|
|
(a) Name the agency responsible for making quake proof houses?
|
|
0
|
2589
|
September 16, 2017
|
|
Give three advantages of rayon
|
|
0
|
4227
|
September 16, 2017
|
|
Give examples to show that plastics are noncorrosive in nature
|
|
0
|
4128
|
September 16, 2017
|
|
Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material ? Advice Rana, giving your reason
|
|
0
|
10048
|
September 16, 2017
|
|
(a) Why do dry hair stand on when combed with a plastic comb?
|
|
0
|
2487
|
September 16, 2017
|
|
Explain why the following are made of thermosetting plastics
|
|
0
|
1526
|
September 16, 2017
|
|
Name the device used to secure tall buildings from lightning. Explain
|
|
0
|
2145
|
September 16, 2017
|
|
If your friend is struck by lightning, how will you help him?
|
|
0
|
1113
|
September 16, 2017
|
|
Explain why plastic containers are favoured for storing food
|
|
0
|
11090
|
September 16, 2017
|
|
During a thunderstorm, which places are unsafe if you are outside?
|
|
0
|
733
|
September 16, 2017
|
|
Give one use each of bakelite, nylon and acrylic
|
|
0
|
2069
|
September 16, 2017
|
|
During a thunderstorm which places are safe?
|
|
0
|
760
|
September 16, 2017
|
|
What steps should be taken to protect yourself in case of an earthquake
|
|
0
|
693
|
September 16, 2017
|
|
Give three advantages of polythene over natural materials
|
|
0
|
2780
|
September 16, 2017
|
|
Describe with the help of a diagram an instrument which can be used to detect
|
|
0
|
6853
|
September 16, 2017
|
|
How can we control the spread of malaria or dengue?
|
|
0
|
5443
|
September 16, 2017
|
|
Suppose you are outside your home and an earthquake strikes
|
|
0
|
5217
|
September 16, 2017
|
|
Write a short paragraph on the harms caused by microorganisms
|
|
0
|
1383
|
September 16, 2017
|
|
Is it true that a charged object always attracts an uncharged object
|
|
0
|
948
|
September 16, 2017
|
|
(a) What will you observe in Figure-I?
|
|
0
|
1624
|
September 16, 2017
|
|
Describe the nitrogen cycle with the help of a neat and labelled diagram
|
|
0
|
3342
|
September 16, 2017
|
|
What will happen if yeast powder is put in sugar solution and kept for few hours ? Name the process
|
|
0
|
3009
|
September 16, 2017
|
|
Why the gold leaves in an electroscope
|
|
0
|
1806
|
September 16, 2017
|
|
How does food become ‘poison’?
|
|
0
|
970
|
September 16, 2017
|
|
Give the methods of prevention of cholera
|
|
0
|
731
|
September 16, 2017
|
|
How can you prevent the spread of communicable diseases?
|
|
0
|
914
|
September 16, 2017
|